Mobile saw



Nov. 26, 1946.

J. c. JAQUES MOBILE SAW Filed March 9,- 1945 2 Sheets-Sheet l John c. Ja ge's Nov. 26,1946. A E I 2,411,624

MOBILE SAW Filed March 9, 1945 2 SheetsShee1 2 Jahn C'. Jaq'ues Patented Nov. 26, 1946 UNITED STATES PATENT OFFICE '2,411,6241H MOBILE sAw g John Jaques, Denison, Tex. Application March 9, 1945, 'Serial No. 581,728

7 invention relates to 'new andluseful 11h provements in mobile saws." I a .One object of the invention is to provide an improved mobilesaw which is adapted to be attached to an ordinary tractor without alteration in the construction of such tractor and whereby the saw maybe readily adjusted and controlled by the driver while manipulatingthe tractor.

Another object of the invention is to provide a relatively simple mobile saw capable of various cutting positions and having very flexible means for adjusting, positioning and feeding the saw to thework,

An important object of the invention is to provide an improved mobile saw adapted to'be attached to and driven by an ordinary tractor involving a saw head having a circularsaw and a triangular brace and adjusting -mechanism, whereby thesaw head is positioned, sustained in position and driven.

A particular object of the invention is to provide a saw head for a mobile sawand suspending means thereforginvolving means whereby the workin position of the head may be changed, as from vertical to horizontal, and the saw driven and fedto the work or sustained in' operating position.

A further object of the invention. is to provide a saw head capable of various positionsand adjustments together with a unique form of swinging and bracingmeans. j

. Still another object of the invention is to provide an improved means for swinging and feedingthe saw which may be readily operated-and controlled by the driver of the tractor. A construction designed to carry out the'invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a'reading of th'e following-specification and by reference 't'djthe accompanying drawings,

wherein a wherein:

Fig. '1' is a'plan view. ofiagtractor equipped with amobil'e sawconstructed in accordancewith the I m h L :Fi 2 is detaiL-partly. in elevation and partly insectionofthelever. mechanism,

3 isa sectional detail ofr' the-boom shackle and connections,

rig. sis was seats View as ma bracke'hiand' n example of the invention is shown, and

ead and boom 7Clai'1 n s. (01. megs) vWhichgis adapted to head 19. Avertical saw shaft 29.

extends from the Fig. 9 is a side elevation of a tractor with the saw head mounted for upright cutting.

In the drawings, the numeral l0 designates an upright frame or support adapted to be fastened on the front end of the generally rectangular frame A (Fig. 4) of an ordinary farm tractor. This frame, whichis rectangular in elevation and which may besuitably fabricated in any suitable manner, is secured across the front end of the tractor frame by any suitable fastening means.

The upper portion of the frame I0 is inclined for-' l i which overhangs A wardly to provide a hanger the area immediately in front of the tractor.

cross member or brace bar I2 is secured transversely in the medial section of the hanger. It is'pointed out that the frame may be mounted on the front of an ordinary tractor without reconstructing or altering the construction of such tractor.

An upper pulley block I3 is suitably secured to the cross bar l2 and has attached, thereto,- a cable l5 passing down and through a lower pulley block ,lfi, thence upward and through the upper block. From the upper block the cable extends rearwardlyto a suitable lever (not shown) which may be mounted on the rear of the tractor frame; such levers being common on farm tractors. The lower pulley block is provided with a hook i1 engage an eye ifiil ig; 7) in th p Of vS bottom ofa cylindrical housing zl' forming part .of the head; A circular saw 22 is suitably'fastened on the lower end of said shaft. Itis obvious that by adjusting the cable [5, the saw head and the saw may be raised or lowered to cut at various elevations. I

,Thedriving mechanism forthe saw is incidental ,to the invention herein set forth and is subject. to variation. For the purposes of illustration, I have shown substantially the same m chan s as is s t, forth. in my o-pend g application, Seria1 No. 553,311, filed September 9,

' supported to cut 1946:. This mechanism includes in general an end-,-

less belt 23 (Fig. 1) having one endepassingaround and driven by thepower take off pulley 13:01? the tractor; while its .other'nend is gsupported-by and drives a housedpulley 24 having connection with aruniversal joint ziiflfrom which a shaft 25 extends [This shaftjsfconnected at its outer end with differentialzti mounted on the housing=2l of ,the head l9, whereby the saw shaft 29 is rotated."

7 The saw 212, isdisposed at one side and is usually Theiinvention has particularly todowith the positioning and maintenance oft-he; saw in cutting positions to which it is adjusted- Vertically spaced. lu s .2

in advance of the tractor frame.

integral with the vhousing j 2 l,

therefrom at the :medial- 28 has ears 29 overlapping and pivoted on the lugs by means of bolts 3!]. The bracket has a sector-shaped web 3| carrying a pivot bolt 32 at its outer reduced end and a series of holes 33, concentric to the pivot bolt, adjacent its inner arcuate edge (Figs. '7 and 8).

A boom 34 is provided at its outer end with a bifurcated head 35 receiving the web of the bracketand pivoted thereto on the bolt 32. The

outer end of the head is secured by a bolt 36 passing through one of the holes 33. B'y'changing the bolt 36 to other holes 33, the angular relationship between the boom and the saw head 19 may be varied. The boom has a shank 31 telescoping its inner end at a point inwardly from a shackle 33 clamped around said boom by means of bolts 39 passing through its flanges 40 (Fig. 6).

A hanger 4|, including an upright thrust plate 42 and an upright bridle plate 43, is clamped on one of the side rails of the tractor frame A by twin bolts 44 extending through the plates, immediately above and below said rail (Fig. 4) The thrust plate has a pair of vertically spaced, outwardly directed wings 45, each provided with openings 46 (Fig. A swivel cross 41, disposed uprightly between the wings, has its vertical arms extending through the openings and receiving retaining collars 48, whereby the cross is pivoted to swing horizontally between the wings. The collars may be welded or otherwise fastened on the ends of the cross arms. The horizontal arms of the cross pass through openings 49 in a bifurcated swivel head 53 and are pivotally confined by collars 5!, like the collars 48; The head 53 is suitably secured to the shank 31 and the inner end of the boom 34 is thus swiveled in the hanger 4!.

The boom functions to swing the saw head l9 and the saw 22 in a generally horizontal plane. If it is desired to tilt or incline the saw, it is merely necessary to adjust the bolt 36 by which the bracket 28 is attached to the saw head. It will be observed from Fig. 1 that the shaft 25 and the boom 34 form a triangular brace for the saw head l9, one leg of said triangular brace being adjustable in length by reason of the telescoping shank 31. This permits the saw head to be swung forwardly or rearwardly; also to be raised and lowered by reason of the pivotal connections at the inner ends of the shaft and the b oom. t

For swinging the saw as well as for holding the head in positions to which it is swung, a lever mechanism is provided which includes a link 52 and a hand lever 53. See Fig. 9. The link has bifurcated heads 54 and 55, at its forward and rear ends, respectively. The head 54 pivotally receives the flattened head 53 of a bolt 51 (Fig. 3) swiveled in the flanges' ifi of the shackle 38 and retained by a nut 58. The rear head 55 receives the flattened head 59 (Fig. 2) of a bolt 60 swiveled in the lower end of the lever 53 and confined by a nut 6|. The head is pivoted to the bolt head by a bolt 59. The lever is pivoted intermediate its ends on a bolt 62 carried by an angular bracket 63 (Figs. 2 and 6) Welded to a strut 64(Figs. 1, 2 and 6). When the hand lever, which is adjacent the drivers seatlisswung, the boom 34 is likewise swung. This lever is employed not only to swing the saw, but to feed it into the work as the sawing progresses.

A horizontal spar or push bar 65 having'one end bolted across the top of the hanger I I, overhangs advancing sid'e of the saw 22 slightly ahead of the saw head [9. The bar is" braced'by the the bolts 44 are tightened to secure 4 strut 64 which has its rear end fastened to the rear of the tractor frame A and is inclined upwardly and forwardly to the bar 65, to which it is suitably secured.

When the apparatus is used. for cutting a tree or other upright objects, the tractor is under sufficient propulsion to cause the bar 65 to exert pressure against the tree and cause the latter to lean away from the tractor and the saw, thus freeing thesaw and impelling the tree to fall beyond the tractor.

In using the saw to cut trees, it is desirable that the bolt 36 of the bracket 28 be engaged in one of the holes 33 (Fig. 7), whereby the saw head I9 is slightly tilted from the perpendicular so as to slightly depress the advance or? cutting sector of the saw and elevate the rear or opposite sector, thus the tree is cut at such an angle as to induce it to fall away from the saw and tractor. The upper end of the lever 53 being within easy reach'of the driver, may be swung by him, thus swinging its lower end and the link 52, forwardly. By keeping the lever under pressure, the boom 34 is swung forwardly, thereby feeding the saw into the tree as the cutting advances. The saw may be used for cutting underbrush, as well as grass and weeds.

When it is desired to use the saw in an upright position for sawing felled timber or, other uses, the saw head I9 is disconnected and mounted as is shown in Fig. 9. Near the bottom of the housing 2|, an eye 66, diametrically opposite the lugs 21, extends from said housing. A second eye 61 projectsfrom the differential 26 and overhangs the eye 66. The lugs 27 are disconnected from the bracket 28 and the head 19 is then turned to a horizontal position. The book I1 is also disengaged from the eye I 8. Bridle links 68 are provided with hooks 6 9! at their lower ends and these hooks are engaged in the eyes '65 and 61. Each link has an eye 10 at its upper end which is engaged with the hook I! of the lower block [6, whereby a sling is provided for suspending the saw head.

A lug H (Fig. 7) having an aperture 12 formed integral with the differential 26,- on the opposite side of the eye I8 from the eye 66, is employed to connect the saw head with boom 34. The bolt 36 in the end of the head is'passedthrough the aperture 12 of the lug H. As is shown in Figs. 4 and 6, the head of the shank-3'! of the boom '34, is provided with an car 13.

By loosening the bolts 44; the hanger 4| may be adjusted longitudinally of the side rail of the tractor frame A. The' shank 31- has sufficient length to permit a considerable extension, thus removing the bolt 59' from the bolt head 59 and swinging the link 52, the rear head thereof may be engaged with the ear. 13 and secured in place by the bolt 59'. V The link willthus extend along the side of the boom 34 and its shank, thus converting it from a telescoping, to a rigid boom. When the saw head [9 has; been swung to the desired position, by sliding the hanger 4l,then the parts in position. The lever 53 is left idle.

It is pointed out that with the saw head I9 in the positions shown inFigs. 1 and 7, the link 52 may be disconnected from the lever 53 and secured to the ear 13 of the boom shank 37. This will produce in co-action with th shaft 25, a rigid triangular brace for the saw head. :Such an arrangement is used for cutting gras's.i Very satisfactory results have been obtainedby -using a circular saw inches in diameter. The teeth the cutting, but may also handle the saw and,

the tractor to the best advantage.

The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made,

within the scope of theappended claims, without departing from the spirit of the invention.

What I claim and desire to secure by Letters 7 Patent is:

1. A mobile saw adapted to be mounted on'a tractor including, an upright support adapted to be mounted on the forward end of the tractor frame, a saw unit including a sawhead having saw rotating means and a circular saw connected to said means, a substantially V-shaped brace connected at its apex to the saw unit and swingably connected at the opposite ends to, the tractor frame and including means for driving the saw rotating means, one leg of said brace being adjustable lengthwise, means carried by the upright support and connected to the saw unit for adjustably supporting the latter, and manually operable means adapted to be mounted on the tractorand connected with the adjustable leg of the brace for adjusting said leg and thereby the saw unit to positions forward and rearward of the upright support. I

2. A mobile saw as set forth in claim 1, and a push bar carried by the upright support and extending laterally thereof above the saw unit.

3. A mobile saw adapted to be mounted on a tractor including, an upright support adapted to be mounted on the forward end of the tractor frame, a saw unit including a saw head having saw rotating means and a saw shaft connected thereto, a tubular shank inclosing the saw. shaft,

a circular saw connected to the saw shaft and rotatable thereby, a substantially V-shape'd brace justable lengthwise, a bridle having one end connected to the saw head and the other to the saw end of the tubular shank, means carried by the upright support and connected to the bridle for adjustably supportingthe saw unit, and manually cperabie means adapted to be mounted on the tractor and connected with the adjustable leg of the brace for adjusting said leg and thereby the saw unit to positions forward and rearward of the upright support. I

5. A mobile saw adapted to be mounted on a tractor including, an upright support adapted to rotatable thereby, apair of laterally extending ears on said shank, a yoke pivoted to the ears,

a substantially V-shaped brace including a drive shaft connected. from the tractor frame'to the saw head and an elongate member adjustable lengthwise and having one end pivoted to the tractor frame and the other end secured to the yoke, means on the yoke for detachably securing the brace member in different angular positions with respect to the yoke so as'to vary the angular position of the saw with respect to the tractor frame, means carried by the upright support and connected to the sawunit for adjustably supporting the latter, and manually operable means adapted to be mountedon the tractor and connected with the adjustable elongate member of the brace for adjusting said member and thereby the saw unit to position forward and rearward of the upright support.

4. A mobile saw adapted to be mounted on a tractor including, an upright support adapted to be mounted on the forward end of the tractor frame, a saw unit including a saw head having saw rotating means and a saw shaft connected thereto, a tubular shank inclosing the saw shaft, a circular saw connected to the saw shaft and 35s mounted on the forward end of the tractor frame, a saw unit including a saw head having Saw rotating means and a circular saw connected ,to said means, a substantially V-shaped brace connected at its apex to the saw unit and swingably connected at the opposite ends to the tractor frame and including means for driving the saw rotating means, one leg of said brace being formed of two telescoping sections so as to be adjustable lengthwise, means carried by the upright support and connected to the saw unit for adjustably supporting the latter, manually operable means adapted to be mounted on the'tractor and having a link connected at its forward end with the outer section of the adjustable leg of the brace for adjusting said leg and thereby the saw unit to positions forward and rearward of the upright support, and means carried by the inner end of the inner one of said telescoping sections to which the rearward endof said link is connectable, so as to prevent telescopic movement of the said sections to thereby convert the adjustable leg of the v brace to a fixed leg to brace the saw unit in a fixed position.

6. A mobile saw adapted to be mounted on a tractor including, an upright support adapted to.

be mounted on the forward end 'of the tractor frame, a saw unit including a saw head having saw rotating means and a saw shaft connected thereto, a tubular shank inclosing the saw shaft,

a circular saw connected to the saw shaft and.

rotatable thereby, a plate pivoted to the shank and carrying a. plurality of openings, a substantially V-shaped brace including a drive shaft connected from the tractor frame to the saw head and an elongate member adjustable lengthwise and having one end pivoted to the tractor frame, means for securing the opposite end of the member to said plate selectively in said openings in different angular positions with respect to the plate so as to vary the angular position of the saw with respect to the tractor frame, means carried by the upright support and connected to the saw unit for adjustably supporting the latter,

and manually operable means adapted to be unit supporting means and the saw unit are prozontal and vertical planes.

vided with cooperating parts for selectively positioning the saw unit and thereby the saw in hori- JOHN C. JAQUES. 

